CONTENTS. 



may migrate — Length of a single flight — Proof of power of pro- 

 longed flight that they are able to cross large bodies of water — 

 Natural enemies, vertebrate and invertebrate — Some species of 

 Acridiidae present an unusual aspect — Oedipodides, striking cases 

 of colour diff"erence — Is correlative with locality — Interesting Ere- 

 mobiens ; modified to extraordinary extent for desert life ... io6 



CHAPTER Vll. 



GREEN GRASSHOPPERS (LOCUSTID^). 



Distinguishing characters — Absence of air-vesicles connected with 

 tracheal system — Ocelli generally imperfect — Peculiar head-orna- 

 ment — Locusta, ovipositor — Life-histories — Deposition of eggs in 

 galls, of Mecoiiema variiim, oi Xiphidium ensiferum — Development 

 of Microcentricvi retmerve — Tibial ears, their structure and 

 functions — Musical organs and music — Katydids, their pertinacity 

 — As pets — Ill-effects of confinement — Food-habits — Anabrus, 

 increase to large numbers — Perfection of resemblance of tegmina 

 to leaves — Defence of a positive nature — Resemblance to Stick 

 Insects — Cave-dwellers — Remarkable forms — Gigantic and ugly 

 Anostostoma — Of the curious genus Deinacrida — Schizodactyltis 

 monstrosus — Eumegalodonidce ... ... ... ... 141 



LEPIDOPTERA. 



CHAPTER VIII. 



SYMBOLS OF PSYCHE. 



Fable of Psyche — Its origin — In its later aspects — Conspicuous beauty 

 and abundance of the Symbols — Favourite resorts — Not only 

 gregarious, but migratory — Twilight fliers — Of a quarrelsome dis- 

 position — Peculiarities of highest interest — Different females of 

 Papilio tnemnon — Perfect protective imitative resemblance of 

 KaUima, the leaf-butterflies ... ... ... ... ... 163 



